Abstract: A learning device assembly for a stringed instrument includes one or more light strip members, at least one light element in the one or more light strips, a connecting member electrically connected to the one or more light strip members, a controller electrically connected to the connecting member and configured to electrically drive the at least one light element in the one or more light strip members and a computing device communicatively coupled to the controller, the computing device configured to be programmed with or more music arrangements and enable the controller to illuminate one or more of the at least one light element in the one or more light strip members to enable a playing of one or more music arrangements on the stringed instrument.

Abstract: A learning device assembly for a stringed instrument includes one or more light strip members, at least one light element in the one or more light strips, a connecting member electrically connected to the one or more light strip members, a controller electrically connected to the connecting member and configured to electrically drive the at least one light element in the one or more light strip members and a computing device communicatively coupled to the controller, the computing device configured to be programmed with or more music arrangements and enable the controller to illuminate one or more of the at least one light element in the one or more light strip members to enable a playing of one or more music arrangements on the stringed instrument.

Abstract: A portable blood alcohol sensing device has an enclosure having an end with at least one vent opening defined therein. A printed circuit board assembly is disposed within the enclosure, with a connector at one end and a sensing device at the other. An air flow device with a diverter and ramp is disposed is disposed within the enclosure adjacent to the vent openings. The ramp includes an opening in which a body portion of the sensor is disposed. The ramp is disposed substantially horizontally at an upward angle relative to the printed circuit board assembly and intake vent openings. The diverter is disposed substantially longitudinally and an inward angle relative to the at least one vent opening. The intake vent openings, the diverter and the ramp define an airflow path through an interior of the enclosure, along a side and over a top portion of the sensing device.